Document NeYQpN003BzgMJ6jN6omVa7xV

R. M. Eichhorn Invention Letter No. 77-32 has been assigned to your letter of August 18, 1977, on Chrysotlle Asbestos as Voltage Stabilizer in Polyolefins. Please refer to this Invention Letter No. on all future correspondence on this subject. A. J. Cozzi/G. R. Obrien We're trying hard, as you know, to bring a voltage stabilized (treeing resistant) dielectric compound to market ----- within the next few months, if possible. Presently, the action is centered on the silane modified materials of IL-77-24. Functionally, asbestos appears to be at least as good - perhaps even a better voltage stabilizer than the silanic compounds, but its use raises some sharp questions about toxicology and the associated handling, customer acceptance and allied considerations. Secondarily, asbestos opacifies the composition -- and the clarity of pe dielectrics has been touted as an advantage; but this may not be a serious problem. In other words, this is good technology functionally, but it is not currently - for the reasons stated above - our first choice. However, if the presently preferred voltage stabilizer candidates do not make it, asbestos will almost certainly be earnestly re considered ----- by UCC and/or others including (or perhaps especially) those in other countries which may be less concerned with the toxicological or opacity aspects. Please plan to file in due course. A copy of Eichhorn's Project Report #559^ is enclosed. /vob CPU: 221, PC: 261, MKT: 223 CC: R. L. Boysen R. E. Byrne - N. F. A. J. Cozzi S. Gates/W. T. Higgins R. H. Handwerk B. W. Kiff V. Auerbach J. S. Nicholas G. R. O'Brien D. M. Papuga/J. J. O'Connell D. L. Schober , R. G. Shaw / J. M. Stains J W. C. Thurber - NY _Cb.lV c._ AUG 3 l 1977 tO)Uk 48nt *to 2)0(5- 4 IL on <Sn ^Mje__ t-j /U^uo'i 0^ 4- Y^ Aue/ti)<\c . 2!)o(r I,u- ^Bcr Vi *- 2d> MVOTION UBTTSR UNION CARBDX CORF. Bound Brook, N.J. Cover Sheet 1 of 2 IL- Titie Chrysotile Asbestos as Dielectric Filler in Ethylene Polymers and Copolymers m. DATE: Contributors) R*M* Eichhorn ABSTRACT (point out novel features A utility) Bus.Area Nos. Opratns Met. File Group --------------------------------------- The use of "Calidria Asbestos", which is a special form of crysotile asbestos, as a filler in ethylene polymers and copolymers used as electrical insulation increases the resistance to failure by the mechanism called "treeing." "Calidria" has proved superior to all other dielectric minerals tested for this application and is probably at least as good as more commonly used organic liquids. Project Report No. 5594, July 28, 1977. NOVELT? SC0P8 ark all that are lew (I) or Improved {xTJ Attach at least one working example A add'l Infonation (sketches/dwgs/reports/eto). as needed to explain the Invention A show Its scope S3 Composition Article of Hfr. Method Ou>e Apparatus Design OBROAD ... new or loportant technology or wide commercial potential OQavSRAQK ... sound technology; reasonable commercial potential NARROW ... covers specific UCC operation or mricet need Cover Sheet 2 of 2 XL- PRESENT STATUS OP PROJBCT ACTIVE ... Size of continuing effort: $ /yr. ED INACTIVE ... Terminated Interrupted (work to be resumed ca. Work (now at) (was carried to) customer evaluation Blab, stage Qpllot scale Qother (explain) ^production soale commercialization Q First use or sale date (*) (win be) None planned at present Commercialization probably .. within 1 yr.O C3 " unlikely Too early to predict commerclallzatlon 2 yrs.Q 5 yrs.Q >5 yrs,|~l < PUBLICATION NONB (was) (Will be) published , (date) Decision has been made to keep information secret within UCC " n ii n n distribute " to customers No decision made yet (place) Disclosure must await filing for protection, at least. Perhaps then we may publish to support our other voltage stabilizer formulations. REMARKS This technology will be very valuable and possibly used by UCC if distinctions are made between the toxicological hazards of the three varieties of asbestos because crysotile, or white, asbestos is the least hazardous. If not, there are other material suppliers who may decide to commercialize anyway. Patent Mgr. - V. Auerbach (2) Patent Counsel - A.J. Cozzl (2) "" - G.R. O'Brien Ass't Director - j.s. Nicholas Tech. Mgr. - oper. - r.b. Handwerk " Kct' ~ R.L. Boysen Cover Sheet Only Patent Mgr. - J.S. Lovell - SC * " " - S. Sterman - TI Other *. Director of R&D - J.e. McKeon * Mgr. of Patents - S. Gates Dr. D.L. Schober - BB Dr. R.G. Shaw - NY Title: Invention Letter Data Sheet IL- Polyethylene Electrical Insulation Containing Calidria Asbestos Contributors (Include FULL first, middle & last names) 1. Name: Robert Milne Eichhorn Address: 871 Boulevard City: Westfield County: Union State: n.J. Zip Code: 07090 Citizen of; U.S. Physicist KXXfflfiKl diXEgEiQttgK XiaaagBCKKKy 2. Name: Address: City: County: State: Zip Code: Citizen of:Chemist or Engineer (check one) 3. Name: Address: City: County: State: Zip Code: Citizen of;__________________________Chemist or Engineer (check one) Date-Conceived; 12/11/73 By Whom: R. Eichhorn References: 9628-122 First Reduced to 6/3/74 Practice: ' By Whom: R. Eichhorn References: Lab. notes W.E. Smoot Witness(es) to Reduction to Practice /TMust be someone OTHER THAN the inventor(s)J : W.E. Smoot Related Patent Cases: I.L. from R.J. Turbett Known Prior Art: References in attached report. rev. 8-70 Vi] -AVS-; t WH'-- S/STLi ^ f* m r--- oJ -jQq iUn> Kvo o<Uj ooonii DZ J CTt Jfcf ^ ^ Ca,Uovi-yc(o If) 00